Table 3 Classification of root resorption
From: Pathophysiological mechanisms of root resorption after dental trauma: a systematic scoping review
| Â | Primary cause | Additional stimuli |
|---|---|---|
Transient resorption | Spatially limited damage to root cementum | Â |
Replacement resorption | Massive damage to root cementum (> 20% of root surface) |  |
External inflammatory resorption | Massive damage to root cementum | Root canal infection |
Cervical resorption | Damage to root cementum (?) | Hypoxic micro-environment (?) |
| Â | Â | Spatially limited damage to periodontal tissues |
| Â | Â | Compromised blood supply |
| Â | Â | Sulcular infection (?) |
| Â | Â | Non-overlapping enamel and root cementum with exposed dentin surface (?) |
| Â | Â | Bleaching |
| Â | Â | Orthodontic treatment (?) |
| Â | Â | Periodontal treatment (?) |
| Â | Â | Endocrine/autoimmune (?) |
Internal resorption | Damage to predentine | Pulp infection coronally of the resorptive defect, apically vital tissue |